下列引起皮肤有蜘蛛痣及肝掌的疾病是（）

A.直肠癌

B.小肠肿瘤

C.胆囊炎

D.肝硬化门静脉高压

E.非特异性直肠炎

— Li Na went out of the China Open in the first round. Why should she be defeated by such 

      an unknown player?

— Well, that's OK. She __________ enough after becoming the world champion. [ ]

A. could not train

B. must not have trained  

C. can not train  

D. may not have trained